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Altera_Forum's avatar
Altera_Forum
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14 years ago

fft on nios

hello everyone. im working on speech recognition project using nios2 on de2 board. now i need to do fft to the signals i get from the audio codec. can anyone help with this ? how to conect...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I agree, pulling samples out of a FIFO would be a much better approach. Haraim, if your audio interface does not have buffering built in I would recommend adding it. A common approach is to set a fill level on the FIFO that you use to alert the CPU that you have a block of data ready to go (FFT input size in your case).